@inproceedings{butler_o'connor_farren_ringwood_2012, 
  title={A feasibility study into prognostics for the main bearing of a wind turbine}, 
  DOI={10.1109/cca.2012.6402684}, 
  publisher={IEEE}, 
  author={Butler and O'Connor and Farren and Ringwood}, 
  year={2012}
  }